import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        while (scanner.hasNextInt()) {

            int x = scanner.nextInt();

            int y = scanner.nextInt();

            Data data = new Data(x, y);

            System.out.println(data.getX() + data.getY());

        }
    }

}


class Data {



    private int x;

    private int y;



    public Data(int x, int y) {

        this.x = x;

        this.y = y;

    }



    public int getX() {

        return x;

    }



    public int getY() {

        return y;

    }



}
